Ontologia

HydroBASINS lev08 watershed · #8080174470

Bassin · #8080174470

A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.

Crosses 1 administrative regions : Yukon-Koyukuk

Pfafstetter: 81220146

Sub-basin area

515,5km²

Upstream area

515,8km²

Discharge

6,64m³/s

Mean elev.

186m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Dulbi River155 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

1 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Koyukuk

    IUCN IV

    National Wildlife Refuge

    516.86 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

4 distinct species · 6 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

6 obs · 1 cellules
Obs. / cellule
≥ 6
6–5
6–5
6–5
< 6

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Not enough documented interactions to build a meaningful graph for this territory.

Hydroclimate (BasinATLAS lev08)

Mean T°

-6,2°C

Annual rain

369mm

Moisture idx (CMI)

-0,16

Runoff

408mm/an

PET

441mm

AET

311mm

Mean slope

6,2°

Water table

109cm

Forest

2%

Crops

0%

Urban

0%

Protected

100%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)